CN210833694U

CN210833694U - Automatic drainage device of gas branch pipe flow orifice plate

Info

Publication number: CN210833694U
Application number: CN201921344733.1U
Authority: CN
Inventors: 余晖; 刘永斌
Original assignee: Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-06-23
Anticipated expiration: 2029-08-19

Abstract

The utility model relates to an automatic drainage device of coal gas branch pipe flow orifice plate, including installing the flow orifice plate in coal gas lateral conduit, the flow orifice plate sets up two and arranges around, the homonymy of flow orifice plate is stretched out and is had the pressure tube, and the other end and the differential pressure transmitter of pressure tube are connected, be provided with adjusting valve on the pressure tube, the flow orifice plate deviates from one side lower part of differential pressure transmitter and can dismantle and set up the mounting panel, the crossing department of mounting panel and flow orifice plate opens there is the wash port, fixed mounting is used for the automatic timing back-blowing ware that regularly sweeps the wash port on the mounting panel, the automatic timing back-blowing ware passes through the power cord and is connected with the power, the air outlet of automatic timing back-blowing ware sets up towards. The utility model discloses can reduce the abnormal conditions of the picture display data of flow orifice plate, reduce the manual work and clear up the number of times of maintaining, practice thrift the labour cost, make picture data display more accurate, be convenient for to the control of pipeline flow.

Description

Automatic drainage device of gas branch pipe flow orifice plate

Technical Field

The utility model relates to an automatic drainage device of coal gas branch pipe flow orifice plate belongs to the technical field of flow orifice plate drainage.

Background

When the hot blast stove is used for burning, the required gas is conveyed after raw gas generated by a blast furnace is purified into clean gas, part of moisture is doped in the gas due to moisture and the like, and water drops are generated after pressure compression and condensation; when the gas flows through the flow orifice plate of the gas branch pipeline, a large amount of water can be attached to the flow orifice plate (the flow of the gas can be detected under the action of the flow orifice plate), and a certain pressure loss can be generated when the fluid flows through the orifice plate, and the evolution value of the generated pressure loss and the flow in the pipeline are in a linear relation in a certain proportion, so that the flow can be converted only by measuring the pressure loss by a differential pressure transmitter, thereby causing inaccurate picture transmission data of the flow orifice plate and influencing the real-time control of the indoor hot blast stove burning furnace on the gas flow degree.

The existing method needs personnel to regularly clean the flow orifice plate instrument by draining water and maintain the instrument, so that manpower and material resources are consumed, and the service life of the instrument is greatly reduced due to frequent water accumulation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic drainage device of coal gas branch pipe flow orifice plate can reduce the abnormal conditions of the picture display data of flow orifice plate, reduces the artifical number of times of clearing up the maintenance, practices thrift the labour cost, makes the picture data display more accurate, is convenient for to the control of pipeline flow.

In order to realize the purpose, the utility model discloses a technical scheme is:

the automatic drainage device comprises two flow pore plates arranged in a gas branch pipeline, wherein a pressure guide pipe extends out of the same side of the flow pore plates, the other end of the pressure guide pipe is connected with a differential pressure transmitter, a regulating valve is arranged on the pressure guide pipe, a mounting plate is detachably arranged on the lower portion of one side, away from the differential pressure transmitter, of the flow pore plates, a drain hole is formed in the intersection of the mounting plate and the flow pore plates, an automatic timing back-blowing device used for blowing the drain hole in a timing mode is fixedly mounted on the mounting plate and connected with a power supply through a power line, and an air outlet of the automatic timing back-blowing device faces the drain hole.

The utility model discloses technical scheme's further improvement lies in: and the air inlet of the automatic timing back-blowing device is connected with a nitrogen source.

The utility model discloses technical scheme's further improvement lies in: the mounting panel is the concentric ring board with the flow orifice plate, it has concentric ring channel to open on the mounting panel, the position department that the automatic timing back-blowing ware corresponds the ring channel sets up with ring channel assorted arch, the automatic timing back-blowing ware passes through fastening screw and is fixed with the mounting panel.

The utility model discloses technical scheme's further improvement lies in: the surface of the inner wall of the two sides of the convex relative to the annular groove is embedded with a ball.

Since the technical scheme is used, the utility model discloses the technological effect who gains has:

the flow direction of the gas flow is along the same direction, so that the moisture contacting the gas firstly is relatively large, the automatic timing back-blowing device is arranged on the flow orifice plate outside the flow orifice plate contacting the gas firstly, and the abnormal condition of the image display data of the flow orifice plate can be reduced by setting and adjusting the automatic timing back-blowing device, the times of manual cleaning and maintenance are reduced, the labor cost is saved, the image data display is more accurate, and the control on the pipeline flow is convenient.

The annular groove and the automatic timing back-blowing device are arranged in the mounting plate to be matched, so that the automatic timing back-blowing device can be replaced, and the drain hole can be aligned more accurately.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure of portion A of FIG. 1;

fig. 3 is a schematic structural diagram of the mounting plate of the present invention;

fig. 4 is a schematic sectional view of a portion B-B in fig. 3.

The device comprises a differential pressure transmitter 1, a regulating valve 2, a flow orifice plate 3, a gas branch pipeline 4, a gas branch pipeline 5, a water drain hole 6, an automatic timing back-blowing device 7, a power line 8, a nitrogen source 9 and a mounting plate.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments:

the utility model discloses an automatic drainage device of coal gas branch pipe flow orifice plate, as shown in figure 1, including installing the flow orifice plate 3 in coal gas branch pipe way 4, two parts about flow orifice plate 3 divide into, through the flange and use bolted connection, upper and lower flow orifice plate 3 goes out with same one side same position and stretches out the pressure pipe, the pressure pipe is circular pipeline, differential pressure transmitter 1 is connected to the other end of pressure pipe, can detect the measurement to the coal gas flow in coal gas branch pipe way 4 through differential pressure transmitter 1 and flow orifice plate 3, set up adjusting valve 2 on the pressure pipe of pressure difference transmitter 1 and flow orifice plate 3, open and close the pressure pipe through adjusting valve 2.

Referring to fig. 1-4, a drain hole 5 is formed in the lower portion of the lower flow orifice plate 3 away from the differential pressure transmitter 1, a mounting plate 9 is detachably fixed to the lower flow orifice plate 3 through a clamp, a buckle, a pressing plate, a screw bolt and the like, the mounting plate 9 is a circular ring plate, the inner diameter of the mounting plate 9 is smaller than the outer diameter of the flow orifice plate 3, a concentric annular groove is formed in the upper surface of the mounting plate 9, an automatic timing back-blower 6 capable of rotating around the path of the annular groove is installed in the annular groove, the automatic timing back-blower 6 is a two-position two-15B two-position two-way type valve produced by a lingtong solenoid valve factory in yao city, the drainage period of the automatic back-blower 6 and the back-blowing drainage time of each time can be set, a bulge matched with the size of the annular groove is fixedly arranged at the position of the automatic timing back-blower, the bulge can be prevented from being clamped in the rotating process, and the automatic timing back-blowing device 6 is fixed with the mounting plate 9 through a fastening screw after rotating to enable the air outlet to be opposite to the water drain hole 5.

The automatic timing back-blowing device 6 is connected with a power supply through a power line 7, and an air inlet of the automatic timing back-blowing device 6 is connected with a nitrogen source 8, so that the gas blown out from the automatic timing back-blowing device 6 is nitrogen, and oxygen is prevented from entering a gas pipeline. The accuracy of the picture data is ensured by setting the drainage period of the automatic back-blowing device 6 and the back-blowing drainage time of each time, and simultaneously, properly adjusting according to the amount of water accumulated in the flow pore plate 3, observing the use condition, and then properly adjusting the automatic drainage period.

The utility model discloses installed automatic timing back-blowing ware 6 on flow orifice plate 3, adjusted through setting for automatic timing back-blowing ware, can reduce the abnormal conditions of the picture display data of flow orifice plate, reduce the manual work and clear up the number of times of maintaining, practice thrift the labour cost, make picture data display more accurate, be convenient for to the control of pipeline flow.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape, principle and the like of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an automatic drainage device of gas branch pipe flow orifice plate, is including installing flow orifice plate (3) in gas branch pipeline (4), flow orifice plate (3) set up two and arrange around and, the homonymy of flow orifice plate (3) is stretched out and is had the pressure pipe, and the other end and differential pressure transmitter (1) of pressure pipe are connected, be provided with adjusting valve (2) on the pressure pipe, its characterized in that: one side lower part that flow orifice plate (3) deviates from differential pressure transmitter (1) can be dismantled and set up mounting panel (9), mounting panel (9) and the crossing department of flow orifice plate (3) are opened there are wash port (5), fixed mounting is used for regularly blowing automatic timing blowback ware (6) to the wash port on mounting panel (9), automatic timing blowback ware passes through power cord (7) and is connected with the power, the air outlet of automatic timing blowback ware (6) sets up towards wash port (5).

2. The automatic drainage device of a gas branch pipe flow orifice plate of claim 1, wherein: and the air inlet of the automatic timing back-blowing device (6) is connected with a nitrogen source (8).

3. The automatic drainage device of a gas branch pipe flow orifice plate of claim 1, wherein: the mounting plate (9) is a circular ring plate concentric with the flow pore plate (3), a concentric annular groove is formed in the mounting plate (9), a protrusion matched with the annular groove is arranged at the position, corresponding to the annular groove, of the automatic timing back-blowing device (6), and the automatic timing back-blowing device (6) is fixed with the mounting plate (9) through a fastening screw.

4. The automatic drainage device of the gas branch pipe flow orifice plate of claim 3, wherein: the surface of the inner wall of the two sides of the convex relative to the annular groove is embedded with a ball.